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|1. (WO2018101013) AUXILIARY ANTENNA, RFID SYSTEM, AND METHOD FOR READING RFID TAG|
|Applicants:||MURATA MANUFACTURING CO., LTD.
|Title:||AUXILIARY ANTENNA, RFID SYSTEM, AND METHOD FOR READING RFID TAG|
Provided is an auxiliary antenna that enables a compact antenna of an RFID tag and an antenna of a reader device to communicate with each other without using a compact antenna as the antenna of the reader device. An auxiliary antenna according to the present invention enlarges the communication range of a compact antenna included in an RFID tag such that the antenna of the RFID tag and an antenna included in a reader device can communicate with each other. The auxiliary antenna has a resonance loop group in which a plurality of resonance loops having resonant frequency corresponding to communication frequency are arranged so as to be magnetically coupled to each other. The antenna area of the resonance loop group is larger than the antenna area of the antenna of the RFID tag, and is equal to or larger than the antenna area of the antenna of the reader device.